Window-lock.



E.4 S. 4ENSIGN.

WINDOW LOCK. APPLlcAnom FILED MAR. 3. 19u.

' l558 Patented Feb. 5,1918.

. /N VEN TDH Ewan y 5i' 5v5/6N simcity s". Ensen, or East' onAivGE, NEW innsn'r; assrenon To nos'E NsIN, or A EAST ORANGE, NEW JERSEY.

WINDOW-Loox.

To' infamy/ bomma Beit known that I, EMoRY S. ENs1GN, a citizen of the United States, residing at East Qrange in .the ycounty of Essex, and State of New Jersey, have invented a new and useful WindowfLock, of which the following is a specifiatiom A .t

This invention r'lates to safety locks for windows or the like and has for its particular feature a resilient resistance `toman improper opening pressureVV on the window sash to which it is applied..v

rlfhis resiliency is preferably supplied by a closely coiled spring having one end `,secured to the casing or stool of the window frame and the other end connected with the sash in such a manner that a limited opening movement is permitted without resistance, so that the window can be safely left partly open, for the purpose of ventilation. I do not limit myself to this mode of fastening, however, as the essential feature is the resilient resistance, and this could be obtained by reversing the fastenings.

I also preferably provide a locking device that will require a special tool for unlocking, and further add a noise-producing agency, as features of my invention.

In the drawings which accompany and form part of this'specificatiom- Figure 1 shows a fragment of a window with my preferred form attached.

Fig. 2 is an enlarged, fragmental view, at right angles to Fig. 1. t

The window sash is marked 1, the casing 2 and the tool'3. f

Referring to Fig. 1, I show a closely coiled spring 4 secured, at its lower end, to a boltV or screw 5 which is fast in casing 2 and has a grooved collar G for engagement by the loop 7 of spring 4.

At its upper end, spring 4 has an upward extension formed with a loop 8 adapted to engage a bolt 9 secured to sash 1. This bolt 9 is preferably provided with a locking head 10 furnished with a key-slot 11 so that the lugs ,12 may be turned vertical if the window is to be opened wide; this turning ofV lugs 12 permitting loop 8 to be disengaged from bolt 9.

The free end of loop 8 is extended downward within the coil 4 and its tip is slightly bent outward, as at 13, so it will rasp on the Speceation of Letters Patent.

cQlS V.0f Spring, 4V when the.' lat?? 1S extend' ed, to', provide anoisefproducing agency that will Serve as a warning of improper manipufeatu're ofy thisparticular noise-pro: ducing :agency liesin the fact that, as spring 4 is extended, each of thetwenty-two coils (as per drawing)` will open by substantially the same w a1n,ount; but each upward` coil will `entend for thel Asumof all the openings below it se, reason of the fact that theA tipV 13" lis immediately connected with the tipper coil, it'will move the same distance as that coil and substantially `farther `distanceV than the lower coils directly opposite. Y In this way, tip 13 will snap over several of the lower coils, with a metallic click as it passes each coil.

Although this style of noise-producer is novel and preferable, I do not limit myself to such construction in combination with the resilient resistance, except within the scope of the appended claims.

In Fig. 2, it will be noticed that collar 6 is preferably elongated in one direction, to prevent bolt 5 from being unscrewed while itis in engagement With loop 7.

In general, the particular value of using a closely coiled spring 4 is that it offers practically no opportunity for a cutting tool to sever any of the coils, besides being cheap and compact in structure. The feature of resiliency is chiefly valuable because it cushions any openingy pressure, because lighter parts may be used in constructionv and also because this resiliency is, in itself, a noise-producing agency, as it will mmediatelyrestore the positions of the parts when pressure is removed and this restoration will be sudden if the opening bar should slip, and the consequent noise would be thus much more noticeable.

Also, if a breaking pressure is applied, the resulting crash is greatly intensified by the resiliencyof spring 4.

In` Figs.- land 2, it will be noticed that VVI have equipped bolt 5 With a locking arvrrangement similar to that shown for bolt 9.

the lock, similarV tok lugs l2, although itis lunderstood that I do not limit myself to this form ofV lock; f ,v

-What I `claim isi-1 Y 1. A Window lock comprising a spring;

and means for so Vattaching said spring to a Y YVWindow 'sash and frame that theopening f producerY adapted for 20 of said Window VWill taX the'resiliency of said member; in combination With a noiseoperation by Vsaid opening movement.

Y 2.1L WindowV lock comprlsmg a coiled spring; means'for so'attachmg the ends of said spring to a Window sash and frame that` `'an ',openlng` movementof sald sa shw1ll eX- tendthe coils ofsaid spring; and a tongue Vthe coils of said spring as said movable fastening is moved away from said stationary fastening..

4. A spiral spring; a stationary fastening for oneend of said spring; a movable fastening for the other end of said spring; and al loop on said sprmg adapted to permit a limited freeseparation of said astenings;

in combination with a noise-producer adapted foroperation' by a further separation of said fastenings.

In testimony whereof, I hereto affix my signature, in the presence of two witnesses.

y Witnesses :y

JEROME HARRIS, S. H. LENER.

vcopies ofgtls patent 'may beobtaine'd for ve cents each, by yaddressing the "Commissioner of Patents,

Washington, D. C. 

